Refrigerant Compressor

Inactive Publication Date: 2013-10-17
SANDEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]According to the present invention, a high temperature oil in the oil storage chamber can be effectively cooled by a low temperature drawn refrigerant in the presence of the bulge portion into the suction chamber side, and it is possible to suppress drop of viscosity of the oil. Moreover, since the suction chamber is disposed in the center side i

Problems solved by technology

However, since the oil separated from a high-temperature discharged refrigerant has a high temperature

Method used

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  • Refrigerant Compressor
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Examples

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Embodiment Construction

[0020]Now embodiments of the present invention will be described in detail.

[0021]FIG. 1 is a cross-sectional view of a refrigerant compressor (in particular, a variable displacement compressor) illustrating an embodiment of the present invention. Further, FIG. 2 is a view of a cylinder head observed from its valve-plate-side end, FIG. 3 is a cross-sectional view of an oil storage chamber (A-A cross-sectional view in FIG. 2), and FIG. 4 is a cross-sectional view of a separation chamber.

[0022]First, the basic construction of a variable displacement compressor will be described.

[0023]A variable displacement compressor 100 includes a cylinder block 101 that has a plurality of cylinder bores 101a disposed in parallel to and around the axis of the cylinder block 101; a front housing 102 that is provided on one end of the cylinder block 101; and a cylinder head (rear housing) 104 that is provided on the other end of the cylinder block 101 with a valve plate (valve-port-formed member) 103 i...

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Abstract

In a cylinder head 104 provided on a head side of a cylinder block 101 with a valve plate 103 interposed therebetween, a suction chamber 119 is formed on the center side and a discharge chamber 120 is formed so as to encircle the suction chamber 119. In the cylinder head 104, an oil storage chamber 132 for storing an oil separated from a discharged refrigerant by an oil separating portion (a separation pipe 130 etc.) is provided. The oil storage chamber 132 extends in the diametric direction of the cylinder head 104 integrally with the cylinder head 104 and has an open end at the outer face of the cylinder head 104, and the open end is occluded by an occluding member 134. Here, the oil storage chamber 132 has a portion bulging into the suction chamber 119.

Description

TECHNICAL FIELD[0001]The present invention relates to a refrigerant compressor to be used for a vehicle air-conditioning system, and the like, and more specifically, relates to a cooling structure for lubrication oils.BACKGROUND ART[0002]In a refrigerant compressor, a lubrication oil is mixed in a refrigerant drawn into and discharged from the refrigerant compressor, but when an oil circulation rate (OCR) to an air-conditioning system becomes high, heat exchange is prevented and the cooling performance drops. Accordingly, it is required to lower the oil circulation rate.[0003]Therefore, a circulation oil contained in a discharged refrigerant is separated and returned. However, since the oil separated from a high-temperature discharged refrigerant has a high temperature and thus has a low viscosity, lubrication performance becomes poor if such an oil is directly returned. Accordingly, it is required to cool the separated oil.[0004]In a compressor described in Patent Document 1, to a ...

Claims

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Application Information

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IPC IPC(8): F04B53/18
CPCF04B53/18F04B27/0821F04B27/0834F04B39/02F04B39/0238F04B39/06F04B39/122
InventorISHIKAWA, TSUTOMUMORITA, YUJIROTAGUCHI, YUKIHIKO
OwnerSANDEN CORP